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Hello, I'm new on this forum and stumbled upon a new problem (or old) with my 2.5l 986 Boxster from 1997. The problem occurs when the engine is started dead cold after sitting a few hours/overnight. Engine starts immediately but the RPMs start to surge / hunt between 1100 and 700 RPM. This continues for about 10 seconds after which the idle smoothes out to the normal cold idle RPM. The first pull away requires a tad more throttle then normal to prevent stalling. After this first pull, everything is almost normal and engine performance becomes better and better. When the engine is hot, the idle sits at 780 RPM with a minor fluctuation now and then (seems to be more than normal) I've been to two shops (official Porsche dealer and local Porsche specialist). Porsche dealer couldn't find anything and the specialist found the camshaft sensor on the left bank to be unplugged - but now comes the strange thing - the cabling is nowhere to be found!!!!!!? Took the car home to check myself but didn't find anything. No camshaft related codes to be found in the diagnosis and no CEL either. Attached one pic showing the sensor and it's missing plug Could someone help me out? - Is it possible for the engine not to throw a CEL when sensor is disconnected? - where is the sensor wire to be found?
Hi, I'd like to ask a question that has been asked, discussed, youtube videoed etc... My apologies, but I've read most of them and haven't found anything similar. I'm looking at a 2004-2006 Cayenne Turbo that I don't want to turn into an engine money pit. I've listened to 8, all cold and most have a very slight knock on the drivers side of the engine. I'm wondering if this is the beginning to the end or some explainable sound. You can only hear it once it drops to a low idle. I went to my local dealer in Denver and they stated they have no way to diagnose, would not perform a new car inspection, but would do a compression check. I realize this is tough to know when the dreaded engine knock may come due to extreme cold, piston expansion, etc...etc... I'm also aware that the turbos were less prone. If I'm going to drop a new engine into an old cayenne, I'd rather do it on a $10k one than $18k which is the present range for a 2004-2005 in CO. Thanks for anyone's help and as a newbie, I hope to purchase a Cayenne and give back via DIY but don't really want to deal with engine issues for 200k+. Thanks again, Frank
So recently i got the P480 code. Fan was running non stop on high. When i turned the car off it kept running on high so i pulled the fuse and went to bed. In the morning i threw in the fuse and the fan didn't run.....turned the car on (Cold) and after a few seconds went to high again. Turned off the car and it ran on high for a while then shut off. So i had to do a bunch of work anyways so i pulled the fan assembly, here are the steps i've done so far: AC fan works fine, this is only the main fan. If i power the fan without connecting to the car (the small wires arent receiving signal) the fan stays off (which i think is good). If i measure the car harness side, it shows the standard 12v and 0v on the plug. The signal wires show ~.3V and 12V My guess was the 12v was the cause of the fan running. To rule out the temp sensor i unplugged it, but the 12v signal was still there. plugged the fan in anyways and it was still running. I did notice when it was unplugged the car only shows as "normal" temp, it didn't peg to the top like i'd think it would. Finally i found that F10 is the signal (Fan Final Stage) Anyone have the wiring diagram or know where this 12v is coming from? I'm 99% positive it does NOT come from the main coolant sensor. And i'm also 99% my fan is working correctly, but i don't have the "before" voltage check to know for sure. Any help would be appreciated. THanks
As many in the US have experienced this year, the winter has been quite cold, and Iowa City has not been above freezing temperature in a looooong time. I do want to be able to drive my car in the winter but find myself driving my other car to prevent my 997 from getting dirty. This is defeating the point of having a 4WD, winter tire ready car! I have not washed my car this winter yet. Question: How do people wash their cars during the winter months when temperature doesn't go above 20 degrees Fahrenheit? Option of 'touchless' car wash that I've used in the past has damaged my rims because of guide rails. Normally I wash it outside using my own house hose and several buckets, mitts, etc per previous post (below) but there obviously is no running water for the hose. Moreover, it's so cold that any water on the car freezes very quickly. I do not have the luxury of having my own temperature controleld indoor car wash like my condo building had in Seattle. http://www.renntech.org/forums/topic/44341-what-do-you-use-to-wash-your-car/?hl=seahawkeye#entry239214